And whereas, it is meet and proper to set out by way of preamble to this act, that inasmuch as the crown is the symbol of the free association of the members of the British commonwealth of nations, and as they are united by a common allegiance to the crown, it would be in accord with the established constitutional position of all the members of the commonwealth in relation to one another that any alteration in the law touching the succession to the throne or the royal style and titles shall hereafter require the assent as well of the parliaments of all the dominions as of the parliament of the United Kingdom.

And whereas, it is in accord with the established constitutional position that no law hereafter made by the parliament of the United Kingdom shall extend to any of the dominions as part of the law of that dominion otherwise than at the request and with the consent of that dominion.

The Colonial Laws Validity Act, 1865, shall not apply to any law made after the commencement of this act by the parliament of a dominion.

Source 2c

No law and no provision of any law made after the commencement of this act by the parliament of a dominion shall be void or inoperative on the ground that is it repugnant to the law of England, or to the provisions of any existing or future act of parliament of the United Kingdom, or to any order, rule or regulation made under such act, and the powers of the parliament of a dominion shall include the power to repeal or amend any such act, order, rule or regulation, in so far as the same is part of law of the dominion.

It is hereby declared and enacted that the parliament of a dominion has full power to make laws having extra-territorial operation.

No act of parliament of the United Kingdom passed after the commencement of this act shall extend or be deemed to extend to a dominion as part of the law of that dominion unless it is expressly declared in that act that that dominion has requested, and consented to, the enactment thereof.